"RollerCoaster Tycoon is a simulation strategy computer game that simulates theme park management. Developed by MicroProse and Chris Sawyer and published by Hasbro Interactive, the game was released for Microsoft Windows on March 31, 1999 and was later ported to the Xbox game console.
The premise of the game is to complete a series of preset scenarios by successfully building and maintaining theme parks. The key to any park is building a large amount and diverse range of rides for the visitors. Players can choose from dozens of roller coaster types and can also build log flumes, carousels, bumper cars, haunted houses, go karts, ferris wheels and swinging ships, among other rides. The player also has the option of building their own roller coaster designs as well as other rides by laying out individual track pieces, choosing the direction, height, and steepness, and adding such elements as zero g rolls, corkscrews, vertical loops, and even on-ride photos, using a tile-based construction system.
Source: Wikipedia, "Rollercoaster_tycoon," available under the CC-BY-SA License.